Electric preheater for hair waving



Oct. 10, 1950 v; SCHLEIMER 2,525,274

ELECTRIC PREHEATER FOR HAIR WAVING Filed June 28, 1948 v 40 /5, a m 1 mj I &\ 2

INVENTO R g F/Ogd l/. 5C/7/6/f776l" Z3 www Patented Oct. 10, 1950 UNITEDSTATES PATENT OFFICE ELECTRIC PREHEATER FOR HAIR WAVING Floyd V.Schleimer, San Francisco, Calif., as-

signor to Duart Manufacturing 00., Ltd., San Francisco, Calif., acorporation of California Application June 28, 1948, Serial No. 35,697 3Claims. (01. 219-24) This invention relates generally to apparatus forthe waving of human hair, where heat is employed to render the wavepermanent or durable. More particularly it relates to apparatus of thepreheat type such as disclosed and claimed in Patent No. 2,161,202,issued June 6, 1939.

In apparatus of the preheat type, heat storage devices or heaters areused in which a sufficient amount of heat is stored to carry out a hairwaving operation.

In the conventional waving of hair, it is common practice to utilizeclamping devices called protectors which are clamped upon the strands ofhuman hair adjacent the scalp. In Croquignole waving each protectorconsists generally of a pair of elongated parts hingedly connectedtogether which can be tightly clamped together by suitable clampingmeans. Protectors usually perform two important functions, namely, toprotect the scalp from undue heating during the steaming or bakingoperation and to grip the hair strands sufficiently tightly to preventpull being transmitted to the scalp when the hair is tensioned on theoverlying curler. As is well known to those skilled in the art, alterthe hair has been clamped by the protector, it is moistened with hairwaving solution and then wound, from its extremity toward the scalp,upon a curler or mandrel. Heat is then applied to the wound hair by anyone of several conventional methods.

As is shown in my Patent No. 2,161,203, I have provided a heat storagedevice which is adapted to be clipped over the wound hair to perform theheating or steaming operation.

It is an object of the present invention to provide an improvedpreheating apparatus by means of which these devices or heaters can beheated to a predetermined temperature before they are applied to thewound hair.

It is a, further object of the present invention to improve particularlyupon the construction of the preheating means employed whereby this partof the equipment is greatly simplified, made more compact, and is moreconveniently adapted to be used by beauty parlor operators.

It is a further object of the present invention to improve particularlyupon the preheating unit itself whereby the failure of the same isreduced to a minimum and whereby the construction of the same issimplified'to the greatest possible extent.

Further objects of the invention will appear from the followingdescription in which the preferred embodiment of the invention is setforth in detail in conjunction with the accompanying drawing.

Referring to the drawing:

Figure 1 is a cross-sectional view of a machine incorporating myinvention. 7

Figure 2 is a cross-sectional view of the machine taken along the line 2-2 of Figure 1.

The apparatus as illustrated in the drawings consists generally of asupporting means consisting of a base l0 and a pedestal At the upper endof the pedestal H I have provided a metal housing |2 Within whichcertain electrical apparatus such as thermostats, etc. is placed andabove which there is mounted the heating apparatus [3.

As shown inFigure 2 the housing member |2 consists generally of ahousing l4 and a casting l5. pedestal I I by any suitable means and ispro vided with a centrally disposed tubular member ll.

It will be noted that the housing l2 provides a I circular opening l8within which is disposed a rotating assembly Hi. The rotating assemblyl9 consists generally of a spider 2| which is secured to a stud 22 whichis adapted to cooperate with the tubular extension I! and to rotate withrespect thereto. The lower end of the spider 2| cooperates with theupper surface of the tubular member ll to form a bearing surface uponwhich the member |9 revolves. The tubular extension I1 is provided withan outwardly extending stud 23 as shown, which extends above the uppersurface of the tubular extension ll and which vided an electricalheating element 28 of the type generally known as a Calrod. Heatingelement 28, being cast directly with and consequently in closecooperative relationship with the casting 26 imparts heat thereto andalso to the heating means 21.

Also cast together with the element 26 I provide a stud 29 which islikewise integral with and adapted to be heated by the member 26 uponwhich a suitable thermostat means 3| may be mounted.

Casting I5 is adapted to be secured to the;

Immediately below the member 26 I have provided an annular ring 32 ofnon-heat conducting material whereby the heat radiating from the member26 will be prevented from radiating downwardly and heating the housingI2. Likewise immediately overlying the upper ends of the heating means21 I have provided a hood of nonconducting material 30 which preventsthe direct upward radiation of heat from the heating means 2'! and whichalso serves as a safety guard whereby the hand of the beauty parloroperator will be prevented from coming in contact, accidentally, withthe heating means 27.

The entire ensemble is adapted to be connected to a suitable source ofelectricity by means of a suitable conductor 40 which extends upwardlythrough the pedestal H and through a suitableopening 4| in the castingl5. The electrical conductor All is adapted to be loosely coiled one ortwo, times about the tubular member ll and is ultimately secured to thethermostat 3i. The thermostat 3! is likewise in electrical contact withthe terminals of the Calrod unit 23. By windingthe electrical conductor40 loosely two or three times about themember ll sufficient slack ispermitted therein that the rotatable member l9 may be rotated within thelimits permitted by studs'23 and 24 without unduly stretching orstraining the conductor 40.

It will be noted that the heating means 2? 1 with the apparatus abovedescribed is shown and described in my Patent No. 2,161,203. Brieflyeach device consists of a, pair of members formed of suitable metal andhaving a sufficient mesh to enable a proper amount of heat to be storedint he same when heated to a temperature of approximately 600 F. Members5| are connected to arms 53 which are hinged together at 54 and normallyurged together by spring 55. Ihe'heating' means 2'! are only ofsufficient height that one heat storage device can be clipped upon thesame: It is apparent however that the heat-- ing elements could be madelonger so that two or more heat storage devices can be clipped upon thesame.

It will be obvious to those familiar with devices of this character thatin the carrying out of a permanent hair waving operation a sufficientnumber of heat storage devices for carrying out the waving of a completehead of hair, may be attached to the means 2'! and current applied. Inthis connection the operator can rely upon the time switch 44 which canbe set for a preheating operation of a given period of time. After theheat storage devices have been preheated to a predetermined temperatureof approximately 600" F. they are detached from the means 2! and appliedto the wound hair which has been prepared to receive them.

It is obvious that, since the heating means and their integrally castheating element 28 are in effect one unit, each of the heating meanswill operate at all times. In the past, one of the difficulties withdevices of this character Was that when each of the heater means 2!carried its own electric heater element that one or more of the heaterelements would fail without affecting the other heating means. Thefailure was not noticeable until the heat storage device had beenremoved from the heating means and placed about the wound hair with theresult that no heat was imparted thereto. Furthermore utilization ofthis type of device eliminates the complicated wiring required by'aplurality of heating elements and reduces the wiring to the absolutelyirreducible minimum. Furthermore, when the base to which the thermostat3| is mounted is cast integrally with the heating means, it is obviousthat the same is adapted to be more efiicient and that all of the heatermeans 21 will attain the same temperature, no more, no less.

My invention reduces the manufacturing costs of devices of thischaracter by eliminating all but one heating element. In addition thisinvention insures that all of the heat storage devices will be heated toexactly the same temperature whereby a better wave is obtained in that auniform heat is applied to all of the wound hair. Repair costs arereduced to the minimum inasmuch asthere is only one heatng element whichcan failand the entire assembly, members 26, 28 and 29, may bereplacedas 9, unit.

Iclaim:

l'. A hair waving preheater for use in conjunction with a plurality ofheat storage devices, said devices each being adapted for application towound hair, a base support, a substantially circular casting of uniformcrosssection carried by said support, means serving rotatably to mountthe casting on said support whereby the casting can be rotated about itsvertical axis with respect to the support, an electric heating elementcast in a substantially circular manner insaid casting, a plurality ofsolid cylindrical fingers cast integral with said circular casting, saidfingers being uniform in size and having their longitudinal axisparallel to the vertical axis of said circular casting and unifcrmlyspaced circumfere ntially about said casting, the ends of said electricheating element cast together at one point upon the inner circumferenceof said circular casting in such a manner as to form an electricalconnection block for connecting said heating element to a suitablethermostatically controlled electric current.

2. A hair waving preheater for use in conjuncticn with a plurality ofheat storage devices, said devices each being adapted for application towound hair, a substantially circular casting of uniform cross-section,an electric heating element cast in a substantially circular manner insaid casting, a plurality of solid cylindrical fingers cast integralwith said casting, said fingers being uniform in size and having theirlongitudinal axes parallel: to the vertical axis of said casting anduniformly spaced circumferentially about said casting.

v 3. A hair Waving preheater for use in conjunction with a plurality ofheat storage devices, said devices each being adapted for application towound hair, a substantially circular casting of uniform cross-section,an electric heating element cast in a substantially circular manner insaid casting, a plurality of solid cylindrical fingers cast integralwith said circular casting, said fingers being uniform in size andhaving their longitudinal axes parallel to the vertical axis of saidcircular casting and uniformly spaced circumferentially about saidcasting, th'en'ds of said electrical heating element beingcast'togeth'er at one point upon the inner circumference of saidcircular casting in such a manner as to form an electrical connectionblock for connecting said heating element to a suitable thermostaticallycontrolled electric current.

FLOYD V. SCHLEIMER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Name Date Abbott Aug. 14, 1928 Number NumberNumber

